package com.itheima.dao.system;

import com.itheima.domain.system.User;

import java.util.List;

public interface UserDao {
    public abstract int save(User user);


    public abstract int delete(User user);


    public abstract int delete(String id);


    public abstract int update(User user);


    public abstract User findById(String id);


    public abstract List<User> findAll();
}
